End-dump truck.



Patented Mar. 26, 1918.

2 SHEETS-SH C. l. LONGENECKER.

END DUMPTRUCK.

APPLICATION FILED JUNE 8.1917.

1,%@,559 Patent-ed Mar. 26,1918.

2 SHEETS-SHEET 2.

I which are at end of END-DUMP TRUCK.

M 11 26119 559 Specification of Letters Patent. Patgmted Egan, 265 11913,,

Application flea June a, 191?. serial no. 173,506.

of gravity of the tilting movement.

With th- To all whom it mayconcern:

Be it known that I, CHARLES I. LONGE- NECKER, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements dump body throughout its be herelnafter more par- In End-Dump Trucks; and I do hereby detlcularly descrlbed and claimed. clare that the following is a full, clear, and In the accompanying drawings exact description thereof. F gure 1 represents a side elevation of a y present invention relates to means for portlon of avehicle frame having a portion tilting the dump bodies of ordinary dump of a dump receptacle pivoted thereto which Vehicles such as that shown in my co-pendis designed to be tilted by my improved ing application, Serial No. 171,104, mechanism, said receptacle and tilting mech- May 26, 1917, wherein is also shown the anism being shown in operating position in structure described and claimed in this apdotted lines, and V plication. ig. 2 is a detail plan view of the he principal object of this invention is shown .in Fig. 1 after to provide means for use in connection with dump receptacle. a fluid piston for tilting the vehicle body In this application which is normally pivoted to the .vehicle frame.

In dump parts to the removal of the vehicles of ordinary construction, pl'

present in common use, it'is cus tomary to elevate the dump receptacle or body by applying the power at a fixed point to raise one end, th pivoted,

and the elevating mechanlsrn 1s fixedly condesign, the latter having depending 3 which cotiperate with si'miea bars to thereby receptacle and vehicle frame totrucks this pivotal connection is adjacent the end of the vehicle Itis obvious that a similar mechanism to that shown could readily be used in side dump trucks. isposed transversely of the side bars 1 and forwardly of the pivotal connection between the body ame are a pair of spaced cross I-beams 5, which rest on. the flanges of the side bars 1 and are secured thereto. Th adapted to supplete raising of the are so conof force 13 g means for shifting the point of application of the power for raising one the dump body as the c' gravity changes, such power may tained to th sary for tilting the present invention thlschange 1n the point of application of poweras t e elevating mechamsm connection between the dump bod frame. This also maintains the piston head 9 mounted on a plston rod 10, application substantially beneath the center of the pisters. The ends of the pivotal connection between the ton ro d'being connected with a cross head 11 which is connected with the shoes 7, sai shoes and cross head preferably being cast integrally.

From each of the shoes 7 extends outwardly a stub shaft 12 on which is pivoted intermediate its ends a lifting lever 13 which includes a pair of arms 14 and 1d. The arms 14 have their free ends bifurcated and receive links 15, the same being pivoted thereto at one end, their opposite ends being similarly connected to brackets 16 on the bottom of the dump receptacle 2.

Pivoted intermediate its ends carried by one of the beams 5 is ing bar 17 whose ends extend beyond the tracks 6 in alinement with the arms of the levers 13. These ends of the equalizing bar are connected with the ends of the arms 14' by flexible members such as cables 18. Connected with each of the arms 14 is a sector 19, in the grooves of which the cables 18 rest when the parts are in inactive position and during the rocking of the levers 13. This maintains the cables 18 substantially the same distance from the fulcrum point of the levers 13 at all times inasmuch as the sectors are arcs with the stub shafts 12 as. their centhe sectors remote from their connection with the arms 14 are spaced from the arms 14, but are rigidly connecte with the levers 13 adjacent these ends by bracing arms 19.

The operation of this invention, while clearly shown in may be briefly described as follows:

Assuming that the parts are in lowered inactive position as in full lines in Fig. 1, compressed fluid is conveyed into the" cylinder 8 through the pipe 8', whereby the piston head 9 is forced toward the right-hand end thereof tomove the cross head 11. Such movement also necessarily causes the shoes 7 to slide rearwardly on the tracks 6 to move the fulcrum point of the levers 13 toward dump re frame, as shown in dotted lines in Fig. 1. The levers are caused to simultaneously rock about their pivots inasmuch as the end of the arms ll' thereof are connected to a relatively stationary portion of the vehicle frame. Such rocking moveto a plate an equalizceptacle and vehicle ment of the levers raises the ends of the arms 14c and elevates the forward end of the dump receptacle. The shifting of the fulcrum points of the levers permits the dump receptacle to be tilted to a greater degree in proportion to stroke of the piston, than if such movement did not take place, as is very obvithe drawings. The entrance of compressed fluid into the cylinder 8 continues until the vehicle dump receptacle has been elevated a suflicient amount, whereupon the control mechanism shown in the above mentioned co-pending application is actuthe figures of the drawing,

flexible connec income ated to discontinue the flow of fluid. en it is necessary to lower the dump receptacle, said control mechanism is operated to allow the compressed fluid to flow from the cylinder 8, whereupon lowered by the action of gravity.

1 claim:

1. In a mechanism of the class described, a body frame, a dump receptacle pivoted thereto, a fulcrum block, a lever non-shiftably pivoted intermediate its ends on said fulcrum block, a connection between one end of the lever and the receptacle, a non-lengthening and non-shortening connection between the other end of the lever and the frame, and means for moving the fulcrum block to rock the lever and tilt the receptacle.

2. Tn a mec anism of the class described, a body frame, a dump receptacle pivoted thereto, a fulcrum block, a lever non-shiftably pivoted intermediate-its ends to said block, a connection between one end of the lever and the receptacle, an attaching member on the frame, means for connecting the other end of the lever to the attaching member, and means for moving the fulcrum block away from said attaching member whereby to rock the lever and tilt the receptacle.

.3. In a mechanism of a body frame, a dump thereto, a fulcrum the class described, receptacle pivoted block, a lever non-shiftably pivoted intermediate 1ts ends to said block, a connection between one end of the lever and the receptacle, an attaching member on the frame, a non-extensible and noncontractile flexible connection between the other ends of the lever and the attaching member, and means for moving the fulcrum block away from said attaching member whereby to rock the lever and tilt the receptacle,

4. In a mechanism of the class described, a body frame, a dump receptacle pivote thereto, a pair of spaced tracks on the frame, a pair of shoes movable along said tracks, a cross head connecting the shoes, a. lever pivoted intermediate its ends to each of said shoes, a connection between one end of each lever and the receptacle, a non-extensible and non-contractile connection between the other end of each lever and the frame, and means for moving the cross head whereby to rock the levers and tilt the receptacle.

5. In a mechanism of the class described, a body frame, a dump receptacle pivoted thereto, a pair of levers slidably fulcrumed on the body frame, a connection between one end of each lever and the receptacle, an equalizing bar pivoted to the body frame, a ion between the other end of each lever and the ends of the equalizing bar, and means for moving the fulcrum points of said levers.

the receptacle 2 will beT 6. In a mechanism of the class described, ,for moving thefulcrum points of the levers 10 a body frame, a dump receptacle pivoted away from said equalizing bar, whereby to thereto, a pair of levers slidably fulcrumed rock the levers and the receptacle. on the body frame, a connection between one In testimony that I end of each lever and the receptacle, an have hereunto set my hand at Milwaukee, equalizing bar pivoted to the body frame, a in the county of Milwaukee and State of 15 non-extensible and non-contractile connec- WISCOIISIII. tion between the other end of each lever and the ends of the equalizing bar, and means CHARLES I. LONGENECKER. 

